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Finding the Fourth Proportional to 143,950.97, 215,920.22 and 49,189.61

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Solution

The fourth proportional to 143,950.97, 215,920.22 and 49,189.61 is: 73,782.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,950.97 : 215,920.22 = 49,189.61 : x
  2. Step 2: Convert to fraction form
    143,950.97/215,920.22 = 49,189.61/x
  3. Step 3: Cross multiply
    143,950.97x = 215,920.22 × 49,189.61
  4. Step 4: Simplify right side
    143,950.97x = 10,621,030,087.37
  5. Step 5: Solve for x
    x = 10,621,030,087.37/143,950.97
  6. Step 6: Final answer
    x = 73,782.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.